Question: What is the Class IB flammable liquid with the highest electric dipole moment whose safety classification and labelling is NFPA 704: Standard System for the Identification of the Hazards of Materials for Emergency Response ?
Paraphrase: Out of all Class IB flammable liquids, which has the highest electric dipole moment whose safety classification and labeling is NFPA 704: Standard System for the Identification of the Hazards of Materials for Emergency Response?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q21009055 . ?ent wdt:P2201 ?obj . ?ent wdt:P4952 wd:Q51139288 } ORDER BY DESC(?obj)LIMIT 5 
Answer: acetonitrile, 1,2-dichloroethane, ethyl acetate, isopropyl alcohol, methanol